[Presentation API] Adds DOMString[] constructor to PresentationRequest.

third_party/WebKit/LayoutTests/presentation/presentationconnectionavailableevent-ctor-mock.html

Index: third_party/WebKit/LayoutTests/presentation/presentationconnectionavailableevent-ctor-mock.html
diff --git a/third_party/WebKit/LayoutTests/presentation/presentationconnectionavailableevent-ctor-mock.html b/third_party/WebKit/LayoutTests/presentation/presentationconnectionavailableevent-ctor-mock.html
index a9fc9430506dcffda53431778149e3977e613a72..85b752dd7921a02eece7b5f54efb9f16e7e951b8 100644
--- a/third_party/WebKit/LayoutTests/presentation/presentationconnectionavailableevent-ctor-mock.html
+++ b/third_party/WebKit/LayoutTests/presentation/presentationconnectionavailableevent-ctor-mock.html
@@ -8,24 +8,9 @@
 <button>click me</button>
 <script>
 
-function waitForClick(callback) {
-  var button = document.querySelector('button');
-  button.addEventListener('click', callback, { once: true });
-
-  if (!('eventSender' in window))
-    return;
-
-  var boundingRect = button.getBoundingClientRect();
-  var x = boundingRect.left + boundingRect.width / 2;
-  var y = boundingRect.top + boundingRect.height / 2;
-
-  eventSender.mouseMoveTo(x, y);
-  eventSender.mouseDown();
-  eventSender.mouseUp();
-}
-
 async_test(t => {
   presentationServiceMock.then(t.step_func(mockService => {
+    var button = document.querySelector('button');
     // This is receiving the user gesture and runs the callback.
     waitForClick(t.step_func(_ => {
       new PresentationRequest('https://example.com').start().then(
@@ -35,7 +20,7 @@ async_test(t => {
         assert_not_equals(e, null);
         assert_equals(e.connection, result);
       }));
-    }));
+    }), button);
   }));
 }, "Test that the PresentationConnectionAvailableEvent ctor can take a valid PresentationConnection.")